(n) an instance in which your manhood has been stripped from you. Similar to excommunication for Catholics, except this actually matters.

1. Bob lost his job and now lives at home while his wife works and makes the money. Bob is now demasculinated.
2. You couldn't get a date even after asking out 7 different people. One of which was even a dude. You have a nice car and everything. You better fucking feel demasculinated.